package com.nowcoder.community.controller;
import com.nowcoder.community.entity.DiscussPost;
import com.nowcoder.community.entity.Page;
import com.nowcoder.community.annotation.LoginRequired;
import com.nowcoder.community.entity.User;
import com.nowcoder.community.service.DiscussPostService;
import com.nowcoder.community.service.FollowService;
import com.nowcoder.community.service.LikeService;
import com.nowcoder.community.service.UserService;
import com.nowcoder.community.util.CommunityConstant;
import com.nowcoder.community.util.CommunityUtil;
import com.nowcoder.community.util.HostHolder;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Controller
@RequestMapping("/user")
public class UserController implements CommunityConstant {

    private static final Logger logger = LoggerFactory.getLogger(UserController.class);

    @Value("${community.path.upload}")
    private String uploadPath;

    @Value("${community.path.domain}")
    private String domain;

    @Value("${server.servlet.context-path}")
    private String contextPath;

    @Autowired
    private UserService userService;

    @Autowired
    private HostHolder hostHolder;

    @Autowired
    private LikeService likeService;

    @Autowired
    private FollowService followService;
    @Autowired
    private DiscussPostService discussPostService;
    @LoginRequired
    @RequestMapping(path = "/setting", method = RequestMethod.GET)
    public String getSettingPage() {
        return "/site/setting";
    }

    @LoginRequired
    @RequestMapping(path = "/upload", method = RequestMethod.POST)
    public String uploadHeader(MultipartFile headerImage, Model model) {
        if (headerImage == null) {
            model.addAttribute("error", "您还没有选择图片!");
            return "/site/setting";
        }

        String fileName = headerImage.getOriginalFilename();
        String suffix = fileName.substring(fileName.lastIndexOf("."));
        if (StringUtils.isBlank(suffix)) {
            model.addAttribute("error", "文件的格式不正确!");
            return "/site/setting";
        }

        // 生成随机文件名
        fileName = CommunityUtil.generateUUID() + suffix;
        // 确定文件存放的路径
        File dest = new File(uploadPath + "/" + fileName);
        try {
            // 存储文件
            headerImage.transferTo(dest);
        } catch (IOException e) {
            logger.error("上传文件失败: " + e.getMessage());
            throw new RuntimeException("上传文件失败,服务器发生异常!", e);
        }

        // 更新当前用户的头像的路径(web访问路径)
        // http://localhost:8080/community/user/header/xxx.png
        User user = hostHolder.getUser();
        String headerUrl = domain + contextPath + "/user/header/" + fileName;
        userService.updateHeader(user.getId(), headerUrl);

        return "redirect:/index";
    }


    @RequestMapping(path = "/header/{fileName}", method = RequestMethod.GET)
    public void getHeader(@PathVariable("fileName") String fileName, HttpServletResponse response) {
        // 服务器存放路径
        fileName = uploadPath + "/" + fileName;
        // 文件后缀
        String suffix = fileName.substring(fileName.lastIndexOf("."));
        // 响应图片
        response.setContentType("image/" + suffix);
        try (
                FileInputStream fis = new FileInputStream(fileName);
                OutputStream os = response.getOutputStream();
        ) {
            byte[] buffer = new byte[1024];
            int b = 0;
            while ((b = fis.read(buffer)) != -1) {
                os.write(buffer, 0, b);
            }
        } catch (IOException e) {
            logger.error("读取头像失败: " + e.getMessage());
        }
    }

    // 个人主页
    @RequestMapping(path = "/profile/{userId}", method = RequestMethod.GET)
    public String getProfilePage(@PathVariable("userId") int userId, Model model) {
        User user = userService.findUserById(userId);
        if (user == null) {
            throw new RuntimeException("该用户不存在!");
        }

        // 用户
        model.addAttribute("user", user);
        // 点赞数量
        int likeCount = likeService.findUserLikeCount(userId);
        model.addAttribute("likeCount", likeCount);

        // 关注数量
        long followeeCount = followService.findFolloweeCount(userId, ENTITY_TYPE_USER);
        model.addAttribute("followeeCount", followeeCount);
        // 粉丝数量
        long followerCount = followService.findFollowerCount(ENTITY_TYPE_USER, userId);
        model.addAttribute("followerCount", followerCount);
        // 是否已关注
        boolean hasFollowed = false;
        if (hostHolder.getUser() != null) {
            hasFollowed = followService.hasFollowed(hostHolder.getUser().getId(), ENTITY_TYPE_USER, userId);
        }
        model.addAttribute("hasFollowed", hasFollowed);

        return "/site/profile";
    }
    //    更新密码
    @PostMapping("/updatepass")
    public  String updatePassword(Model model,String oldPass,String newPass,String confirmPass){
        System.out.println("-----更新密码执行-----");
        if (!newPass.equals(confirmPass)){
            model.addAttribute("differentError","两次密码不一致");
        }
        if (oldPass.equals(newPass)){
            model.addAttribute("identicalError","修改的密码不能和原密码相同");
        }

        User user = hostHolder.getUser();
        //加密
        String password=CommunityUtil.md5(newPass + user.getSalt());
        System.out.println(user);
        int rows=userService.updatePassword(user.getId(),password);
        System.out.println(rows);
//        return  null;
        return "redirect:/login";

    }
    //我的帖子
    @GetMapping("/discusspost/{userId}")
    public  String  getMyDiscussPost(@PathVariable("userId") int userId,Model model,Page page){
        System.out.println("-----------------我的帖子"+userId+"--------------------");
        int discussPostCount=discussPostService.findDiscussPostRows(userId);
        model.addAttribute("discussPostCount",discussPostCount);
        model.addAttribute("user",userService.findUserById(userId));
        //个人帖子分页
        page.setRows(discussPostCount);
        page.setPath("/user/discusspost/"+userId);
        page.setLimit(5);
        System.out.println("分页------"+page);
        List<DiscussPost> list = discussPostService.findDiscussPosts(userId, page.getOffset(), page.getLimit());
        List<Map<String, Object>> discussPosts = new ArrayList<>();
        if (list != null) {
            for (DiscussPost post : list) {
                Map<String, Object> map = new HashMap<>();
                map.put("post", post);
                long likeCount = likeService.findEntityLikeCount(ENTITY_TYPE_POST, post.getId());
                map.put("likeCount", likeCount);
                discussPosts.add(map);
            }
        }
        System.out.println(discussPosts );
        model.addAttribute("discussPosts", discussPosts);
        model.addAttribute("user",userService.findUserById(userId));
        return  "/site/my-post";

    }

    //我的回复
    @GetMapping("/myReply/{userId}")
    public String getMyReply(@PathVariable("userId") int userId ,Model model ,Page page){
        model.addAttribute("user",userService.findUserById(userId));
        return "/site/my-reply";

    }



}
